Fan for hydrocarson motors



Feb. 5r, 1924. www@ C. H. WILLS FAN FOR HYDROCARBON MOTORS original Filed Nov. 12, 1920 MYI/1101011114 2416 MM q iq/@fj a longitudinally slidable sleeve 5.

@eternidad Felle. 5, 1924.

naar

CEILDE HAROLD WELLS, Gili MABJYSVILLE, MECHKGAN.

FAN FR EYDRCABN EEO'ERS.

Application filed November 12, 1920, Serial 33o. animee. Renewed ieptember 2o, 1828.

To al? fw/tom'z't may concern? Be it known that I, HILDE HAROLD WILLS, a citizen of the United States, residing at Marysville, in the county of St. Clair and State of Michigan, have invented certain new and useful Improvements in Fans for l'lydrocarbon Motors, of which the following is a specification.

This invention relates to hydrocarbon motors, and particularly to the fan for such motors.

The principal object of the invention is to save power in driving the fan. rlhis object is accomplished b automatically de.- creasing the effective criving tongue delivered to the fan from its drivin mechanism when the latter obtains a pre( etermined high speed. Particularly, it is an object ot' the invention4 to obtain the. above result by means of a slipping clutch, the decreasing frictional pull or disengagement of which is effected conjointly by the overloading of the clutch and by the outward thrust of the fan, the latter effect serving to ive a denite time of separation of the c utch members.

Another object is to provide yfor the -eflicient lubrication of the clutch.

lVit-h these objects in View, the invention is embodied in preferable form in the construction and arrangement hereinafter described and illustrated inthe accompanying drawing, in which drawing the view shown. is a central vertical section through'the fan, part of its driving mechanism and the slipping clutch disposed between the driving mechanism and the fan. v

Referring to the drawings, a is part of a hydrocarbon motor and 1 indicates the fan of the hydrocarbon motor which is freely mounted on a shaft 2 which may be driven from the crank shaft through intermediate gearing in any suitable manner. `The outer art 3 of the hub of the fan is mounted reely upon an annular bearing flange 1r gf e flange l is provided with circumferential surface oil grooves 6. The sleeve 5 is keyed at 7 to the shaft 2. This sleeve is provided with a conical extension 8 spaced from that part of the sleeve surrounding the shaft and constituting a male clutch member. Between this conical section and a recessed rear flange 9 of the fan hub ismcunted a conical bushing 10, referably of bronze or equivalent materia, for the purposes herein described, and which member is secured to the fan hub and constitutes the other element of a cone clutch. Mounted in the space between the bearing portion of the sleeve 5 and the conical extension 8 is a spring 1l, the forward end of which bears against the sleeve and tends to press the clutch member 8 into' engagement with the clutch member 10, and the rear end of which bears a ainst the retaining ring 12, which in turn ears against an angular ball thrust and radial pressure bearing 13. The bearing 13 takes the thrust of the spring at low speeds and at high speeds acts as a radial pressure bearing, holding the fan concentric with the shaft. An adjusting spacing ring 14 is mounted between this bearing 13 and another radial pressure ball bearing 15. An oil admitting opening 16 is formed in a bearing retaining sleeve 17, and from this opening a passa-geway 18 leads to a channel 19 extendin through the shaft longitudinally thereo, and through the front end thereof so as to convey the oil which is under pressure to the front part of the clutch chamber. rl"he oil is thus caused to travel back from the front end of the clutch to the bearing surfaces of the fan hub and sleeve flange, and thence between the two clutch members. rlhe oil then passes from the space to the rear of the clutch members to the bearings 13 and 15, reaching the latter through the passageway 20. It passes from these bearings by way of an openin 21 formed in a. casing 22 back to the cran chamber.

ln the operation of the device, when the motor and the shaft 2 are running at any speed belowl a redetermined rate the clutch member 8 wil be forced into enga ement with the other conical clutch mem er 10 with suflicient force to grip the two members together, and thus drive the fan at the speed of the shaft, the angular bearing 13 acting as a thrust bearin to take the thrust of the spring. When t e engine and the shaft reach a predetermined high speed the overload thus produced on the clutch members will tend to cause them to slip one upon the other, and to this efect is conjoined the outward thrust of the fan at high speeds which causes the members to move relatively longitudinally. As a result of these two forces the sleeve 5 will be forced inwardly against the spring relatively to the hub of the fan, and the clutch members will slip upon one another, thus reducing the force of the frictional engagement between the clutch members are again forced more tight-- ly into engagement, and thespeed of the fan therebysynchronized with the speed of the shaft. y

Since the oil feed to the twosets of bearingsis. controlled by .the 'extent of opening between the clutch members, the feed of oil to such bearings will b e automatically increased `as the shaft speeds up owin to the separation of the `members one fgiom the other, thus enlargin the oil passage.

Havin thus described my invention, what I c aim is: f

1. In a hydrocarbon motor, a fan, driving mechanism therefor, and connectingcmechaf nism between the driving mechanism and Isaid fan yieldable under end thrust of the 2. In a hydrocarbon motor, a fan, driving mechanism therefor, and a clutch between said fan and driving mechanism yieldable to lessen the frictional enga ement of said clutch under end thrust of t le fan.

3. In a hydrocarbon motor, a fan, drivin mechanism therefor, and a spring presse clutch between said drivingmechanism and fan separable under a predetermined load on the driving mechanism and the end y thrust of the fan.

4. In ahydrocarbon motor, a driving shaft for said fan, a clutch between said shaft and :tenaces cone 'members connecting said shaft and.

fan and forming an oil passage between them leading to said bearin s and means for effecting the separation o the members as the speed of the shaft increases to thereby effect an increased feed of oil to said bearings.

6. In a hydrocarbon motor, a fan, a driving shaft therefor, a casingsurrounding the shaft a thrust bearing between the shaft and an, another bearing between vthe shaft and casing, separable clutch means between the shaft and fan, an oil feeding passage leading to the clearance between the clutch members, means of oil communication from Vspaces around the clutch to said bearings, a

common oil channel communicating with said two bearings, and said casing havmfr an 011 exit opening communicating with sa1d chan- 1 nel.

7. In a hydrocarbon motor, a fan, a driving shaft for said fan, a casing surrounding the shaft, a clutch between said fan and shaft, a spring for said clutch, and an enf nular ball bearing between said casing and shaft taking the thrust of said fan.

Signed at Marysville, Michigan, this 19 day of October, 1920.

CHILDE HAROLD wILLs. 

